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5 papers · 2 filters
The nonequilibrium Ehrenfest gas: a chaotic model with flat obstacles?
Carlo Bianca, Lamberto Rondoni
It is known that the non-equilibrium version of the Lorentz gas (a billiard with dispersing obstacles, electric field and Gaussian thermostat) is hyperbolic if the field is small.…
Deformed quantum mechanics and q-Hermitian operators
A. Lavagno
Starting on the basis of the non-commutative q-differential calculus, we introduce a generalized q-deformed Schrödinger equation. It can be viewed as the quantum stochastic counter…
Local and nonlocal solvable structures in ODEs reduction
Diego Catalano Ferraioli, Paola Morando
Solvable structures, likewise solvable algebras of local symmetries, can be used to integrate scalar ODEs by quadratures. Solvable structures, however, are particularly suitable fo…
Braiding and entanglement in spin networks: a combinatorial approach to topological phases
Zoltan Kadar, Annalisa Marzuoli, Mario Rasetti
The spin network quantum simulator relies on the su(2) representation ring (or its q-deformed counterpart at q= root of unity) and its basic features naturally include (multipartit…
Some remarks on the coherent-state variational approach to nonlinear boson models
P. Buonsante, V. Penna
The mean-field pictures based on the standard time-dependent variational approach have widely been used in the study of nonlinear many-boson systems such as the Bose-Hubbard model.…